Liquid reagent feeder



Dec. 16, 19741'. vA. J. ALMQul's-r 1 Y 2,266,143

LIQUID REAGENT FEEDER Filed April 19, 1959 2 sheets-sheet 1 W. lg

QQ A E Q M @WFM In venfor Dec. 16,` 1941.v A. J. ARMQU'ST .2,266,143

LIQUID REAGENTAFEEDER Filed April 19, 1959 2 sheets-sheet 2 A torneys Patented Dec. 16, 1941 f LIQUID REAGENT FEEDER t Albert Almqust, Philipsburglldont" l y Application April 19, 1939,' serialzNo; 268,825 i i 1 claim.V (or 13j- 164) 'y The present invention relates to the proportional feeding of -liquid and is designed particularly for use in the feeding of liquid reagents inmill flotation apparatus, as well as for other purposes.

An important object of the present invention is to provide a liquid reagent feeder of this character embodying a simple and practical adjustment means to regulate the feeding of the liquid from a few drops each minute to a materially increased volume, and which at the same time is efcient and economical in operation and otherwise Well adapted for the purposes for ywhich the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming part hereof, wherein like numerals refer to like parts throughout, and in which- Figure 1 is a top plan view.

Figure 2 is a longitudinal sectional view taken substantially on a line 2-2 of Figure l.

Figure 3 is a vertical sectional view through one of the compartments showing the adjusting means for the oat.

Figure 4 is a fragmentary sectional View of the float control valve.

Figure 5 is a detail of the nozzle connection.

Figure 6 is a detail of the cam and lever for adjusting the float, and

Figure 7 is a side elevational view of the guide for the vertical adjustment of the float..

Referring now to the drawings in detail, wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention, the numeral 5 designates a reservoir tank adapted to contain the supply of reagent liquid having a drain pipe 6 extending upwardly through the bottom thereof with the intake end of the drainpipe terminating above the bottom of the reservoir, the other end of the pipe 6 being threadedly connected to a nipple 'l positioned in the bottom of a tank or chamber 8 which is supported below the horizontal plane of the reservoir 5 in order that the liquid from the reservoir may gravitate to the chamber 8.

Secured to the inner end of the nipple 1 is a cap 9 having an opening extending therethrough and formed into a valve seat la. A valve H cooperates with the seat lil to control discharge of the liquid into the chamber 8 from the pipe 6, the valve including a stem l2 which projects upwardly into the chamber, said Valve stemY having its upper end threaded as at I3 for threaded engagement-with afloat i4. The valve stemv l2 also extendsupwardly beyondthe float i4 and-is slidableV through a bracket l5, said bracket including an angular depending extension IB slidably mounted in a guide l1 secured to one of the side walls of the chamber by means of screws or the like I8.

The extension l5 is also formed with a circular recess I9 within which a disk 28 is seated for free rotation therein, the disk having a lever 2| eccentrically connected thereto and projecting through the adjacent wall of the chamber and provided with an angularmanipulating end 22.

The lever 2| is journalled in a bracket 23 secured to the outer wall of the chamber, and the bracket is provided with a pair of outwardly projecting stops 24 in the path of movement of the manipulating extension 22 of the lever to limit rotation of the lever in either direction.

Secured in position alongside of the chamber 8 is a second chamber 25 having communication with the chamber 8 by means of a drain pipe 26 which has its intake end projecting upwardly above the bottom of the chamber 8 as clearly shown in Figure 2 of the drawings.

The discharge end of the drain pipe 26 is connected to a nipple 21 secured in position inthe bottom of the chamber 25 and the said chamber is provided with a control valve and adjustable float identical to that described with respect to the chamber 8 and accordingly a detailed description thereof is not deemed necessary.

A drain nipple 28 is positioned in the bottom of the chamber 25 with its intake end terminating above the bottom of the chamber and to its lower end is attached a rubber hose 29 having a nozzle 30 connected thereto by means of a hollow nipple 3|, the discharge end of the nozzle being reduced as shown at 32 and curved in the position as clearly shown in Figure 2 of the drawings.

The nozzle 30 is supported in an upright position bly means of an arm 33 which is secured intermediate the ends of a vertically extending rod 34, the upper and lower ends of the rod being slidably inserted in a U-shaped bracket 35` rod 34 downwardly to maintain the nut 38 against the upper end of the bracket.

A transverse pin 4l is mounted in the nipple 1 to limit the downward movement of the valve H.

In the operation of the device the float i4 maintains a desired liquid level in the chamber 8 by means of the valve Il and from the chamber 8 the liquid passes into one or more of the additional chambers 25 under similar level control for subsequently entering the hose 29 for discharge from the nozzle 30. The additional chamber or chambers 25 are provided to prevent any variation in the amount of liquid supplied to the nozzle 30 which might be caused when the supply of liquid in the reservoir reaches an extremely low level and is suddenly again refilled.

The quantity of liquid discharged from the nozzle 30 which has its reduced end 32 curved downwardly, is controlled by the raising and lowering of the nozzle by means of `the nut 38.

The adjustment of the iioat I4 relative to the valve stem I2 and the adjustment of the bracket l5 by means of the lever 2| control the level of the liquid maintained in the respective chambers.

The level of the liquid in the chamber 8 must always be maintained slightly higher than the level of the liquid in the chamber in order that the latter level may be maintained constant.

It is believed the details of construction and manner of operation of the device will be readily understood from the foregoing without further detailed explanation.

Having thus described the invention, what I claim is:

In a valve structure, a valve stem, a, oat carried thereby, a horizontally extending attaching bracket, a cam member adapted for vertically adjusting the bracket on its supporting structure and adjustable means for suspending the stern on the bracket to limit opening movement of the valve.

' ALBERT J ALMQUIST. 

